Most domestic water treatment solutions used in Australia and New Zealand are based on micro filtration technologies. A micro filter typically has a pore size between 0.1 and 5 micron (1000 microns equal 1 mm). When water undergoes micro filtration, many microorganisms are removed, but viruses, pesticides and metals remain in the water.
Reverse Osmosis (RO) is a water purification technology that uses semipermeable membranes which have a pore size around 0.0001 micron, thus 1000 times narrower than the average micro filtration technology. The super small RO membrane pores are large enough to allow water molecules to pass through, but small enough to block other types of molecules. After water passes through a reverse osmosis filter, it is essentially pure water.
After billions of years of evolution, aquaporin proteins have become highly selective water channels, providing stable, high-performance filtration. This ensures consistently purified water throughout the lifetime of the filter.
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